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強磁性結合する合金クラスター系の新しい磁性

Research Project

Project/Area Number 09450233
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Physical properties of metals
Research InstitutionHosei University

Principal Investigator

INO Hiromitsu  Hosei University, Faculty of Engineering, Professor, 工学部, 教授 (20029466)

Co-Investigator(Kenkyū-buntansha) MATSUURA Makoto  Miyagi National College of Tech., Professor, 教授 (40042262)
TOKUMITSU Kazuto  Univ. of Tokyo, School of Eng., Assistant, 大学院・工学系研究科, 助手 (20180143)
ICHINOSE Hideki  Univ. of Tokyo, School of Eng., Assistant Prof., 大学院・工学系研究科, 助教授 (30159842)
SAKINO Kiyonori  Hosei Univ., Faculty of Eng., Assistant Prof., 工学部, 助教授 (20120818)
NAOI Hisashi  Hosei Univ., Faculty of Eng., Assistant Prof., 工学部, 助教授 (00297996)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥4,600,000 (Direct Cost: ¥4,600,000)
Fiscal Year 1998: ¥4,600,000 (Direct Cost: ¥4,600,000)
Keywordssuperparamagnetism / duster / melt-quenching / Pr-Fe / La-Fe / magnetization / Mossbauer effect / Mossbauer effect / クラスター / 超強磁性 / 超常磁性 / 磁化 / ランジュバン関数 / 磁気クラスター / 希土類・鉄合金 / メルト・クエンチ / Pr-Fe合金 / アモルファス合金
Research Abstract

We proposed the super-ferromagnetism model to analyze the magnetic behavior of a ferromagnetically coupled ferromagnetic cluster system. In the model the magnetic behavior is characterized by two parameters TィイD3intra(/)cィエD3 and TィイD3intrer(/)cィエD3. TィイD3intra(/)cィエD3 represents the Curie temperature of a cluster, that is, the strength of the interaction of magnetic atoms in the cluster. Whereas, TィイD3intrer(/)cィエD3 represents the Curie temperature of the whole system determined by the strength of the interaction between the ferromagnetic clusters.
We determined TィイD3intra(/)cィエD3 and TィイD3intrer(/)cィエD3 together with average cluster size in melt-quenched Pr-Fe alloys, in which magnetic clusters are formed by the concentration fluctuation of the amorphous phase in the alloys.
The present model can be applied for the analysis of magnetic behavior of inhomogeneous systems. The concept of super-ferromagnetism is closely related to that of cluster-glass, which is used widely but not defined rigorously. The present model has an advantage to give physically well-defined parameters and hence give clear pictures for the magnetic state.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report

Research Products

(13 results)

All Other

All Publications

  • [Publications] E.Kita, S.Kondo, H.Ino …: "Neutron and X-ray Small Angle Scattering Studies of Rapidly Quenched …"J.Phys. Soc. Japan,. 66. 451-454 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M.Matsuura, H.Ino …: "Amorphous Fe Clusters Imbedded in fcc La for Melt-Quenched La-Fe Alloys"J.Phys. IV France,. 7. C2 1015-C2 1016 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] S.Yoshiike, H.Ino: "Structure of Melt-Quenched La-Fe Alloys of the Magnetization"Master. Trans. JIM. 39. 102-109 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 吉池彰吾、井野博満、他: "液体急冷Pr-Fe合金の構造と超強磁性モデルによる磁化解析"日本金属学会誌. 62. 15-21 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] E. Kita, S. Kondo, H. Ino, M. Furusaka, K. Shiratori, H. Lee and H. Chen: "Neutron and X-Ray Small Angle Scattering Studies of Rapidly Quenched La-Fe Alloys"J.Phys. Soc. Japan. 66. 451-454 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M. Matsuura, M. Sakurai, K. Suzuki, H. Adachi and H. Ino: "Amorphous Fe Clusters Imbedded in fcc La for Melt-Quenched La-Fe Alloys"J.Phys.IV France. 7. C2-1015-1016 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] S. Yoshiike, H. Adachi, H. Ichinose, K. Tokumitsu, H. Ino and K. Shiratori: "Structure of Melt-Quenched Pr-Fe Alloys and Analysis of the Magnetization based on Super-Ferromagnetism"Mater. Trans. JIM. 39, NO.1. (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] S. Yoshiike, H. Adachi, H. Ichinose, K. Tokumitsu, H. Ino and K. Shiratori: "Structure of Melt-Quenched Pr-Fe Alloys and Analysis of the Magnetization based on Super-Ferromagnetism"Nippon Kinzoku Gakkaishi. 62 (in Japanese). 15-21 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] S.Yoshiike,H.Ino et al.: "Structure of Melt-Quenched Pr Fe Allays and Analysis of Magnetizations..." Mater.Trans JIN. 39・1. 102-109 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 吉池彰吾・井野博満ほか: "流体急冷Pr-Fe合金の構造と超強磁性モデルによる磁化解析" 日本金属学会誌. 62・1. 15-21 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Matsuura,H.Ino et al.: "Amorphous Fe Clusters Imbedded in fcc La for Melt-Queched Le-Fe Allays" J.Phys TV FRANCE Colloque C2. 7・C2. 1015-1016 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] S. Yoshiike, H. Ino et al.: "Structure of Melt-Quenchad Pr-Fe Alloys and Analysis of the Magnetization Based on Super-Ferromagnetism" Materials Transactions, JIM. 39,1. 102-109 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 吉池彰吾,井野博満ほか: "液体急冷Pr-Fe合金の構造と超強磁性モデルによる解析" 日本金属学会誌. 62,1. 15-21 (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1998-03-31   Modified: 2016-04-21  

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